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Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.

Different parts of the nail express different keratins, showing unique patterns of differentiation.

An 8-year-old girl had nail and hair issues that improved without specific treatment, but fungal nail infection was hard to cure.

The hair follicle structure is more complex than thought, with new findings on protein formation.

The epidermis is crucial for hair growth.

Vertebrate skin evolved to be more specialized and complex, especially in land animals.

The inner root sheath evolved to help hair grow safely through the skin in mammals.

Videodermoscopy can help diagnose and monitor nail bed psoriasis.

Keratin in mouse hair follicles is complex and plays specific roles.

Hair and nail cells share similar proteins, indicating a common differentiation pathway.

Spiny keratoderma may be ectopic hair formation on palms and soles.

Lizard claws have hair-like keratins similar to those in mammals.

Keratinocytes in hair follicles differentiate similarly to skin cells, with specific patterns in different regions.

The document explains the genetic causes and characteristics of inherited hair disorders.

Children with different rheumatologic diseases have specific skin symptoms that can help with diagnosis.

Onychomatricoma is a unique nail tumor that mimics the entire nail unit and is not related to other hair-related tumors.

Hair follicle stem cells are crucial for touch sensation and proper nerve structure in mice.

Onycholemmal horn is a rare nail tumor in elderly women, treated by surgical removal.

Onychomatricome is a benign nail tumor with specific dermoscopic features that help distinguish it from cancer.

Dendritic cells help regulate skin development and hair growth in mice.

The conclusion is that "trichoknesis" should be recognized as a separate condition from trichodynia, characterized by itching instead of pain.

A new staining method clearly shows nerves around eyebrow hair follicles.

Cat claws stay sharp by shedding their outer layer through microcracks formed during activities.

Human hair is complex and grows in cycles starting from embryonic life.

A tough membrane between the outer and inner layers of human hair protects it from damage.

Trichoscopy can diagnose Netherton syndrome without pulling hairs.